Transmission gearing



May l, 1951 R. E. Hlss 2,550,696

TRANSMISSION GEARING Filed April 14, 1947 3 Sheets-Shes?I 1 FI El rf-Z L: 1 1 2 E4 `3 56 38 'f 5? 3mm/X36 68 J 48 l] "il $4/ 26k I I/`/ w la g k l' 20 /0 22 4 :l L24 :l l l /2 d f /4 I' 6 u-i 8g ATTORN7 May 1, 1951 I R. E. Hiss 2,550,696v

' TRANSMISSION GEARING Filed April 14, 1947 3 Shee'elsf-Shee?l 2 INVENTQR. f/ chafa f. H/ss May 1, 1951 R. E. Hiss TRANSMISSION GEARING 3 Sheets-Sheet 3 Filed April 14, 1947 Patented May 1, 1951 Richard E.- Hiss, St. Clair Shores, Mich., assignor vto Continental Motors Corporation, Detroit, Mich., a corporation of Virginia v Application April 14, 1947,` Serial N0. 741,401

s claims; (o1. v4-665) l `This invention relates `to nan internal conflbus,- tion engine,vespecially to internal combustion engines ofthe V-type. In many applications re- Vquiring.internal combustion engines for power,

space limitations are animportant factor in the design of the power plant. Notwithstanding such` limitations however itisnevertheless necessaryY that the power plant have certain minimum performance characteristics, and yet be possessed of certain desirable design,features.

Itis an object of this invention to provide an internal combustion engine power plant of the V-type which is provided with camshaft and auxiliary drives at one end of the cranks-haft, these drives being compactly arranged so as vto require a minimum of additional space, and being driven through a single connection to thecrank'-v shaft which is substantially self-aligning, thusy removing the necessity for precisionmanufacture to effect meticulous alignment of many..

machined parts.Y This and other objects are accomplished in an internal combustion VM-type enginev which is` provided'with a single power Itake-01T extension at oneendof the crankshaft and a sleeve drivingly connectedto the outer end'of the extension and extending back toward the crankshaft itself.

Various auxiliary shafts of the camshafts areA connected to be driven from the sleeve as will be seen' from the following description and the accompanying drawings.

In the drawings: f Fig. l is a longitudinal section through the power take-oir end of a V-gype internal Voombustion engine made according to the invention.

Fig. 2*.is a'view in section substantially on line 2.-,-2 of Fig. l. and I Fig. 3A is a View in section substantially-on line 3 3' of" Fig. 1. l,

AVV-type internal combustion engine indicated v generally at 2 is shown having a crankshaft 4.

One end 6 of crankshaft 4 is shown as being journaled in the bearing 8. .A power take-oir extension I is shown as having an inner end I2and anouter end '|4. Extension I!) is drivingly secured. at its inner end I2 to the end 6 of crankshaft-4. A power take-off ange i6 is secured to the outer end Ui of extension lll to be driven thereby.

f A'sleeve I8 having an outer. end 20 and an inner end 22 is mounted to substantially envelop the power take-olf extension ID. The cuter end of sleeve i3 Vis drivingly associated., as` by means of splines, with the outer end 1410i extension Il). Sleeve '8 and extension it `are rotatably Y2 supported inV bearings 24 and 26. These are supplied with ol under pressure from oil duct 2B.

The inner `end 22 of sleeve I8 is preferably provided with a mounting ange 3G, which carries and drives a gear 32. `Gear 32 meshes with a second gear 34 which is mounted on and drives a sleevet. Sleeve 36 is provided with an enlarged diameter portion 38 to which gear 34 is attached,

and a reduced diametertportion 40 whichis drivinglyA associated at its outer end with an auxiliary shaft 42. Auxiliary shaft T42 extends forward between two banks of cylinders of the V engine. One cylinder of one of these banks is seen at 44. Auxiliary yshaft 42 rotates about an axis which is substantially perpendicular of the crankshaft 4. rihe purpose of the first auxiliary shaft 42 will notoe detailed here, but can be ascertained by reference to copending patent application Serial No. 747.026, filed May v9, 1947, and assigned 'to the assignee of this invention.

The enlarged diameter portion 38 of. sleeve 36 is rotatably supported in a b earing 46; the smaller diameter portion 40 of the yjsleeve is rotatable in a bearing 4S. Bearing 46f is lubricated by oil under pressure supplied through duct 5t, and

bearing. 46 is suppliedwithfoil from duct 52.

, Between its ends, more specifically, at one end rof enlarged diameter portion 38, sleeve 36 carries a power take-01T gear 54. Powertake-of gear 54 meshes with opposed gears 56 and 58 which may be connected to drive any suitable auxiliaries such as .magnets 60, and the like.

A gear S2 is mounted inside the hub of gear 34 and is,` connected to bedriven thereby through noted that the inside diameter of the hub 66. of Y inside gear 62 is largerthan the outside diameter of auxiliary shaft 42, so that there is no interference between themy' vInside gear 62 vmeshes 4with a pair of gears 68 and i0 which drive the camshafts of the V engine. rOne of these camshafts is shown in dotted linesat l2. Gears vlili and 'l0 drive their respective camshafts through auxiliary shafts rotatably mounted in housings 14 and 'I6 respectively. Gear 'E8 is driven by gear 68 andmeshes with a gear 36 to drive its camshaft. Gear 82 is driven bygear 'lil andmesheswith a gear 84 to drive camshaft 12.

Between the ends of sleeve I8, there is mounted a power take-off gear 86 which meshes with a gea-r. Gear 88 may be connected to drive any Vdesired auxiliary such as the oil pump indicated generally at 90.

Operation by gear 32 through means which include inside' gear e2 and gear 34. Additional auxiliaries-.pare

driven by power take-01T gears 54 and 86.

As can be seen from thedrawings-especially- Fig. 1, the power train to gear-34 -'includes-ayi`e1d-.

able shaft portion of substantial length: powerY Sleeve I 8 drives gear; 32'v `which. in

take-off extension i0. This couldznotbe .accoma- 1 plished in a compact design except by some expedient such as sleeve i8 which is doubledfback' on the extension. This-arrangement gives the power train a torsional flexibility Which better enablesit to absorb shock than woul'djoe .possibleif gear 32 were mountedfdirectly on the end. of crankshaft 5. Additional 'flexibility beyond gear. 34 is provided by shaft 42. ,f f v With all .auxiliaries 'deriving power. through shaft .I Si, it is unnecessaryfto. makethe'casin'g Vfor theauxiliaries line up precisely with .thexcrankeA case, because shaft extensioni-Oiis self-@aligning to a limited extent.. Thus there isracor'is'iderable additional advantage overa designtin which,..for example, gear 32 would bemountedzdirectlyion the crankshaft.

Thus'there is shown a V-type internal combustion engine having a power take-01T arrangement which provides for multiple power 'take-offs in a compact mechanism taking up little space,.

which has a considerable degree of shock absorbing capacity, and which is easily mounted on the:

axially through said sleeves and drivinglyrcon-v nected thereto solely at'their extreme outer ends.

2; An accessory gear and power take-off'transmission assembly adapted to be secured to-an-end cranlrcase face of an internal combustion engine and comprising an accessory casing, accessory transmission mechanism supported entirely within said accessory casing and comprisingfparallel sleeves supported in spacedbearings carriedrby said casing and carrying meshing gears' at'the inner ends thereof and disposed .in:a plane normal to the sleeve axes .andsubstantiallytparallel to the'innerend face of the accessory casing, driving; and .t driven shafts 'respectively-1 extending: axially through said sleeves and drivingly connected thereto solely'attheir extreme outer ends, said sleeves substantially enveloping said driving and driven shafts, said sleeves comprising torsional vibration dampening members.

:An accessorygear and 'power .take-off .transmission assemblyadapted to .be secured to'anend crankcase. face of 1an .internal combustionfeng'ine 4 and .comprising an accessory casing, accessory transmission mechanism supported entirely within said accessory casing' and comprising parallel sleeves supported in spaced bearings carried by said casing and carrying meshing gears at the inner ends thereof and disposed in a plane normal to the sleeve axes and substantially parallel to the inner rend-I face of thesfaccessoryY casing, driving and driven shafts respectively extending .axially through said sleeves and drivingly connected thereto solely at their extreme outer ends,

saidrfsl'eeves substantially enveloping said driving and driven shafts, said sleeves comprising torsional-"vibration*dampening members, both said x sleeves provided .with beveled drive gears carried at substantially the middle portion, and driven: accessories .driven by said beveled gears and rotatably supported by said accessory casing about laxes extending normal to said sleeve axes.

4. An accessory gear and power take-off transmission assembly adapted to be secured to an end crank'cas'e face of-an internal combustion engine-"and comprising an accessory casing, accessory transmission mechanism `supported entirely uY-:ithin-saidaccessory casing and comprising parallel sleeves supported in spaced bearings carried by lsaidnasing and carrying-meshing gears at the innerV ends thereof and disposed in a plane-norinalfo'the sleeve axes and substantially parallel to th'einne'r end face of the accessory casing,` driving and driven shafts respectively extending axially through saidsleevesand drivingly connected theretoscleiy at their extreme outer ends, both lsaid driving and driven shafts extending beyond the inner end face of the accessory casing and solely supported in said accessory casing by saidI drive connection with said sleeves substantially internally'of the outer bearings supporting said Sleeves.

iiAnracce'ssory gear-and power take-01T "transmission assembly adapted to be secured toy ari-'end crankcase face of an internal combustion engine and comprisingan accessory casing, accessory` transmission mechanism supported entirely withinlsaid accessory casing and comprising parallel sleeves supported vin spaced bearings carried by. said casing and carrying meshing gears at the inner ends thereof and disposed in a plane normal to the sleeve axesl and substantially parallel 'to the inner endfac'e of the accessory casing, driving and driven shafts respectively extending axially through said sleeves and drivingly: connected thereto solely at their extreme outer ends, thesaid sleeve connected with said i drivenk shaft being provided with an enlarged inner 'end portion, and4 aninnergear secured in said enlarged inner end portion concentric with the first mentioned gear'carried at the inner end of said sleeve, said inner gear having an axial bore through which said driven shaft extends, the axial bore in said inner gear being of such .dimension as to have a clearance with respect to said driven shaft.

6.' An accessoryv gearzand. power take-off .transmission assembly adapted to be secured. to. an end crank'caseface of an internal combustion engine'and comprising an accessory casing, accessory transmission mechanism supported entirely within said accessory casing and comprising parallel sleeves supported in spaced bearings carried-by said casing and carrying meshinggears at the inner ends thereof and disposed ina plane normal to the -sleeve axes and substantially parallel to `the inner end face of the accessory casing, driving-and driven shafts lrespectively exrying bearing portions for supporting the outer end or" said sleeves, and other accessory transmission mechanisms supported within the accessory casing between said walls, and gears carried by an intermediate portion of said sleeves for driving said last mentioned accessory transmission mechanisms.

7. An accessory gear and power take-off transmission assembly adapted to be secured to an end crankcase face of an internal combustion engine and comprising an accessory casing, accessory transmission mechanism supported en tirely within said accessory casing and comprising parallel sleeves supported in spaced bearings carried by said casing and carrying meshing gears at the inner ends thereof and disposed in a plane normal to the sleeve axes and substantially parallel to the inner end face oi the accessory casing, driving and driven shafts respectively extending axially through said sleeves and drivingly connected thereto solely at their extreme outer ends, both said driving and driven shafts extending beyond the inner end face of the accessory casing and solely supported in said accessory casing oyesaid drive connection with saidsleeves substantially internally of the outer bearings supporting said sleeves, said casing having an inner wall carrying bearing portions for supporting the inner ends of said sleeves, and an outer wall spaced from said inner wall and carrying bearing portions for supporting the outer end of said sleeves, and other accessory transmission mechanisms supported Within the accessory casing between said walls, and gears carried by an intermediate portion of said sleeves ior driving said last mentioned accessory translmission mechanisms, the outer wall of said accessory casing having an enlarged bore coaxial with the sleeve enveloping said drive shaft and Y carrying an internal bearing, and a gear supported in said last mentioned bearing and internally splined to an intermediate portion of the aforesaid sleeve.

8. An accessory gear and power take-off transmission assembly adapted to be secured to an e end crankcase face of an internal combustion engine and comprising an accessory casing, accessory transmission mechanism supported entirely within said accessory casing and comprisparallel sleeves supported in spaced bearings carried by said casing and carrying meshing gears at the inner ends thereof and disposed in a plane normal to the sleeve axes and substantially parallel to the inner end face of the accessory casing, driving and driven shafts respectively extending axially through said sleeves and drivingly connected thereto solely at their extreme outer ends, both said driving and driven shafts extending beyond the inner end face of the accessory casing and solely supported insaid accessory casing by said drive connectiony with said sleeves substantially internally of the outer bearings supporting said sleeves, said casing havingan inner wall carrying bearing portions for supporting the inner ends of said sleeves, and an outer vvall spaced from said inner wall and carrying bearing portions for supporting the outer end of said sleeves, and other accessory transmission mechanisms supported within the accessory casing between said walls, and gears carried by an intermediate portion of said sleeves for driving said last mentioned accessory transmission mechanisms, the outer wall of said ac cessory casing having an enlarged bore coaxial with the sleeve enveloping said drive shaft and carrying an internal bearing, and a gear supported in said last mentioned bearing and internally sp ined to an intermediate portion of the aforesaid sleeve, the outer Wall of said accessory casing having an enlarged bore coaxial with the sleeve enveloping said drive shaft and carrying an internal bearing, and a gear supported in said last mentioned bearing and internally splined to an intermediate portion of the aforesaid sleeve.

RICHARD E. HISS.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Caminez et al. Nov. 9, 

